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  • Title: Effect of piperine on pentobarbitone induced hypnosis in rats.
    Author: Mujumdar AM, Dhuley JN, Deshmukh VK, Raman PH, Thorat SL, Naik SR.
    Journal: Indian J Exp Biol; 1990 May; 28(5):486-7. PubMed ID: 2401524.
    Abstract:
    Piperine (1-peperoyl piperidine), a major alkaloid isolated from Piper nigrum Linn, potentiated pentobarbitone sleeping time in dose dependant manner, with peak effect at 30 min. Blood and brain pentobarbitone levels were higher in piperine treated animals. Piperine treatment in rats, treated chronically with phenobarbitone, significantly potentiated pentobarbitone sleeping time, as compared to the controls. There was no alteration in barbital sodium sleeping time. It is possible that, piperine inhibits liver microsomal enzyme system and thereby potentiates the pentobarbitone sleeping time.
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